Installing/Baytrail

Installation on Baytrail ChromeOS devices can be performed in either a dual boot or standalone setup. A standalone setup is one in which GalliumOS is installed on the internal storage, replacing ChromeOS, or installed to external media (SD, USB flash, USB-attached SSD) leaving ChromeOS on the internal storage untouched; a dual boot setup is one in which GalliumOS is installed to the internal storage alongside ChromeOS, and the user can choose between them via keyboard shortcuts on the developer mode boot screen.

Since Baytrail devices do not ship with any legacy boot capability, a firmware update is required in order to run GalliumOS (or any other OS besides ChromeOS) regardless of configuration.

Contents

Switch to Developer mode

Switching to developer mode (as opposed to standard / verified boot mode) allows more control over the device/OS, and is required in order to run GalliumOS. Switching to/from developer mode will wipe all userdata from the device, so ensure anything important is backed up first.

Shutdown the Chromebook

Hold ESC+Refresh+PWR to boot the machine into recovery mode

* You will see a screen with a "Chrome OS is missing or damaged" warning - DON'T PANIC ;)

Press CTRL+D

You will see a message asking if you want to enable developer mode / turn OS verification off - Press ENTER to confirm

Wait for Powerwash (userdata wipe) to complete (this will take a few minutes)

Once Powerwash is complete, your device will reboot and you will see the white developer mode boot screen, complete with warning that OS verification is off

Note: you can also add any additional command line parameters here to install additional packages (eg Kodi, Steam, Minecraft) as detailed on chrx.org

chrx will install GalliumOS and reboot when finished; use CTRL+L to boot in legacy mode if not set as the default

Enjoy GalliumOS!

Device-specific Notes

Lenovo 100S (ORCO)

John Lewis' firmware update script recognizes ORCO and can install his BOOT_STUB, but as of this writing (20160417), does not successfully boot GalliumOS. This is probably just a temporary bug, but see Reddit thread for more info.

MrChromebox's RW_LEGACY update does boot GalliumOS, and can be used for both standalone and dual boot setups. See Firmware.